Income Taxes - Provision for Income Tax (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Current:
State and local	$ 31	$ 30
Foreign	50	43
Total Current	81	73
Deferred:
Federal	238	1,322
State and local	(6)	147
Foreign	32	60
Total before change in valuation allowance	264	1,529
Change in valuation allowance	(9)	(4,709)
Net deferred	255	(3,180)
Income tax provision (benefit)	$ 336	$ (3,107)